Ive been using it on and off on my toy poodle for almost 2 years now. No problems and it works great. I started Tucker on it when he was around 3 months old, he was on it when I had his pre-op blood work done and it came back fine. However I have read that it can mess with blood work. I use less than what is recommended and once the intial staining goes away ( usually 3 to 4 weeks) I only use it when I see they are having issues, then I use it for a week and its gone again. I bought the smallest bottle they offered and it lasted over a year.
__________________  Love all 9 of my furrbutts! |